Home / 80,472.06-120,629.79-38,340.90

Finding the Fourth Proportional to 80,472.06, 120,629.79 and 38,340.90

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Solution

The fourth proportional to 80,472.06, 120,629.79 and 38,340.90 is: 57,474.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,472.06 : 120,629.79 = 38,340.90 : x
  2. Step 2: Convert to fraction form
    80,472.06/120,629.79 = 38,340.90/x
  3. Step 3: Cross multiply
    80,472.06x = 120,629.79 × 38,340.90
  4. Step 4: Simplify right side
    80,472.06x = 4,625,054,715.41
  5. Step 5: Solve for x
    x = 4,625,054,715.41/80,472.06
  6. Step 6: Final answer
    x = 57,474.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.